Device for locking the differential gear in motor-cars.



H. MAYER & G. SCHLATTER. DEVICE FOR LOCKING THE DIFFERENTIAL GEAR IN MOTOR CARS.

APPLICATION FILED MAR 2!. X916.

Patented Jan. 1.6, 1917.

grmmnfow MAYERAND evs'r w' scnna'rmn, or amaon, swrranpta'ynaeemnpns.

. Tqld l l uih om it ma concern: I Be itf kno'wn t ati we, HEINRICH MAYER end-. GUsTAv SoHLAT'mR, the former citizen of tbe German Empire, the latter a citizen 5 of the ,Swiss Confederation, residing at Arbon, Switzerland, have invented new and lis efnl Improvements in Devices for LocktheDifl'erential Gear in M0tor-Cars, of w i oh the following is a specification.

Clhi sinvention relates to devices for lock- ,the 'diiferential gear in motor-driven vehicles; i

The presence of a differential gear in the drivin gear of motor-cars is the cause of many t iisa'g'reeable occurrences when traveling, such. as spinning of the wheelslowing to too little adhesion, and so on. In order to prevent the same devicesv have heretofore been proposed for enabling the dilferential gear to be heldand thereby preventing it from actin". The means employed heretofore, in which the displace/able part of, a claw-clutch was mounted either on the hub of the casing of the differential gear, or on the shaft, and in the latter case was driven through keys. by the shaft, are connected with considerable disadvantages. In the former case the clutch sleeve located between the casing of the differentialgearand the hearin' necessitates this hearing being located arther out or being entirely omitted. Both measures lead to enlarging the distance between the claws ofthe chiitchand the hearing and, conseqlilently, to an increase in the dimensions of the parts in question l'iecause greater bending moments occur. Secondly, when the displaceahle part of the clutch is .a mounted on the shaft it is C -ue that the bearingcan be leftnearer the casing of the differential gear, but as the sleeve of the clutch is located oltitside the hearing it is necessary to leazd'the casing, of the differential gear or its hub throngh the hearing. It cannot be avoided that with the necessarily only small diameter of the clutch, the pressures on the claws hecon'ie so great that the prlessureperunit of area which is admisslble ct instruotively cannot always be obtained. Also, this second. form has the de- 5. feet that when, that shaft on which the clntchsleeve is mounted is taken. out. the latter fallsdown and, on replacing thcslmft, not rarely can'he found only with difli'culty or maybeentirely forgotten. For obviating 55 this danger use must be, made of other connnvxcn ron nocxme THE DIF ERENMAL enanxnitoroa cans Specification Letters Patent. Application filed March 21, 1918. Sci-11111101 85,884.

normal enema SAUBER, creation, swia'annpsnii.

atentddaihlfi, i

structiv means, such asg lirtwidinfl another 7 hearing for theclutch slei ein t e1 eas of the differentialgean-and the like.

A primary object of this invehtio provide an improved deviceyffor differential gig/3.11111 ino'tOr-dW'en vveh lesg; the bearings near the casing ofth ererfr.

tial gear being retained; .This tained by mounting the clutch sleeveofit casing of the differential gear. aridh 3 on the hub of the same terrorism-30f the? 1 driving" shafts. In, a prer i I invention there islocatedbetwee heibear ing and the clutcl'r sleeve ahlyza we .ofither clutch sleeve disposed zit right-l ng les maps proximately at ri ht n"l es t o the: axes for grinding' the cla 01 t e clutch.

The invention is applicable both to cha driven cars and to (are having a Ca'rda shaft; in the latter case the locking device will. be applied to the rear axle, i. e., the

'lfhe invention consists in the construction, arrangement and combination of parts de scribed hereinafter and pointed out in the claims.

One illustrative embodiment ofthe invention d'ia gra'rninatica]1y represented by Way of examine in the accompanying drawing, wherein 35 Figure 1 is a longitudinal section taken tl'irongh the rear axle, the differential gear and the locking device, and Fig. is a crosssection taken on the line (II- 7 through the shaft. i

Referring to the drawing, the clutch memher 1 is 'di splaceably mounted on the casing 2' of the diflerent ial The claws 3 of the rnch ber take through holes in the casing 2 and can engage with the claws 4. of a bevel gear wheel. 7 which is drivenby means of ribs 6 by the shaft The clutch member 1 has a groove 8, into wl'lich the end 11 of an ati lj'ustinp; lever 9 filler-timed in the casing 12 takes in known nnin'ner. Bymoving the lever 9 by means of a shaftlO extending oitltsidc the casing IEZ'the' clutch l'nember 1 can be 'l'lftfid. toward and may from the casing whereby the casing 52. oft'he different'ial-,-gcar and consequently the differential gear itself can be fixed and released.

1.111 a locking device for diflerential gearing, the combination of a divided axle, differential-gearing connecting the sections periphery o supported and axially movable on the the casing, clutch teeth onthe lclultnch member adapted-hto be xfnoirledinto oc e a ment wit one o t e ars of th difi e regzial. ge 2. In a locking device -for difierential aring, the combination ofa divided axle,

' ifl'erential gearing connecting the'sections of the. axle including a rotatable cylindrical casing, a cylindrical clutch memberentirely supported bfy and axially movableon the periphery o the casin and out of en age.- ment with the huh of t e latter, said 0 utch member havi an endwall arallel to the end of'the casm clutch teet on said end I wall projecting t rough the end of the casnfi yclutch teeth on one of the ears of the i d1 erentiaL-means to axially sli e the clutch member on the casing to move the clutch teeth into and out of engagement, and means to rotate the casing.

3. In a locking device 'for diflerential ring, the combination of a divided axle,- differential gear ng connecting the sections 7 of the axle ineludinlg a rotatable cylindrical casing, a cylindrica clutch member entirely of the axle including a cylindrical casing having vertical end walls, bearings for the casing in close proximity to said end 'walls, means to rotate the casing, a clutch member having a cylindrical sleeve mounted on the peri hery o the casing and having an vend wall disposed at right-angles to-theaxis of the casing extending between the latter and one of the bearings, short clutch teeth on said end wall projecting throughone end of the casing, clutch teeth on one of the gearsof the differential, means within the planes of the ends of the casing adapted to axially slide the clutch sleeve on the casing to move the clutch teeth on the end wall of the sleeve into andfout of engag'ement with the teeth on said gear. I

n testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses. I j

y HEINRICH MAYER.

GUSTAV SCHLATTER. Witnesses :5

FRANK DINNEKE, 1 EMIL MEILE.

portion slidab'ly 1' 

